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3 years ago

How do plant make their lives own food

Chemistry

1 answer:

vfiekz [6]3 years ago

5 0

Answer:

Plants, like all living things, need food to survive. Plants make their food using a process called photosynthesis, which means “putting together through light.” During photosynthesis, a plant traps energy from sunlight with its leaves. It also takes up water from its roots and carbon dioxide gas from the air.

Explanation:

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A car is traveling 90.0 kilometers per hours. What is its speed in miles per hour?

slavikrds [6]

Answer:

56 mph!

Explanation:

1 kph = .621371 mph

90 * .621371 = 55.92339

5 0

3 years ago

Read 2 more answers

Metallic aluminum reacts with MnO2 at elevated temperatures to form manganese metal and aluminum oxide. A mixture of the two rea

Oksi-84 [34.3K]

Answer:

Explanation:

To find the theoretical yield of the equation. First identify the limiting reactant in a chemical equation.

Step 1: write out the equation and balance it.

Al+ 3mno2=3mn+ 2Alo3.

The limiting reactant is mn02 because it is not found in excess.

Step 2: convert the % to gram . All contain 67.2% mole and mno2 will be 100-67.2= 32.8

All=67.2÷100×290(total gram of the reactants)=194.88g

Mno2=32.8÷100×290g=94.12g.

Step 3:calculate the molar mass of mno2 and that of mn. The atomic mass of mn is 54.9380 and that of oxygen is 16.

Mno2=54.938+ (16)2=86.98g/mol.

Mn=54.938.

Step 4:

From your balanced equation , calculate mn.

94.12g mno2× (1mol mno2÷86.98(molarmass) of mno2×3 mol of mn/4molAl×54.938g of mn÷1mol of mn.

94.12g×1÷86.98g×3÷4×54.938÷1

=44.58g

6 0

3 years ago

what is the equation relating to the energy separation between levels in the H atom to the number of the level (n) called?

Firlakuza [10]

Answer: https://study.com/academy/answer/complete-the-sentence-concerning-the-energy-level-diagram-for-the-hydrogen-atom-the-equation-relating-the-energy-separation-between-levels-in-the-h-atom-to-the-number-of-the-level-n-is-called-the-equation.html#:~:text=Answer%20and%20Explanation%3A,is%20called%20the%20Bohr's%20equation.

Bohr's equation

Explanation: https://study.com/academy/answer/complete-the-sentence-concerning-the-energy-level-diagram-for-the-hydrogen-atom-the-equation-relating-the-energy-separation-between-levels-in-the-h-atom-to-the-number-of-the-level-n-is-called-the-equation.html

Answer and Explanation: The equation relating the energy separation between levels in the H atom to the number of the level (n) is called the Bohr's equation.

6 0

3 years ago

copper has an atomic number of 29 that means there are 29 protons in the nucleas of each copper atom that's waht the atomic numb

Pie

Just times the amount of electrons in one copper atom by 4

8 0

3 years ago

Copper can be drawn into thin wires. How many meters of 34-gauge wire (diameter = 6.304 × 10ିଷ in ) can be produced from the cop

otez555 [7]

Answer:

Therefore, the length of copper wire in meters = 8321.01 m

Explanation:

Mass of covellite = 5.01 lb

Note: 1 lb = 453.592 g, therefore mass of covellite in grams = 5.01 * 453.592 = 2272.496 g

Mass copper in the covellite = 66% * 2272.496 = 1499.847 g of copper

Volume of copper in 1499.847 g of copper is obtained using the formula; volume = mass/ density

volume of copper = 1499.847 g/ 8.95 gcm⁻³ = 167.58 cm³

since the wire is considered to be a cylinder, the length of the wire is same as the height of a cylinder

Using the formula, V = πr²h

h = V/πr²

radius of wire, r = diameter/2

diameter = 6.304 * 10⁻³ in.

1 inch = 2.54 cm, therefore radius of wire = (6.304 * 10⁻³ in * 2.54 cm)/(2 * 1 in) = 8.00608 * 10⁻³ cm

h = 167.58 cm³/ {3.142 * (8.00608 * 10⁻³ cm)²}

h = 832101.211 cm

1 cm = 0.01 m

Therefore, the length of copper wire in meters = 832101.211 * 0.01 m = 8321.01 m

6 0

3 years ago